Develop Bugs

Mobile network got disconnected while moving to 3g??

Today I encountered a problem ..my mobile network signal disconnects when moving to 3g..if it is 2g ,it works fine...this happened when I was trying nikez new jb rom ..then I tried flashing different roms from gb to jb, but the problem still exists...somebody please help ...
Sent from my HTC Desire using xda app-developers app

hariharan.ks said:
Today I encountered a problem ..my mobile network signal disconnects when moving to 3g..if it is 2g ,it works fine...
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Are you based out of India? Because of the way the 3G network sharing is set up in India, there is always a network loss and then reconnect while moving between 2G and 3G. 3G connectivity is also still quite poor. It might not be a problem with the ROM itself.

[Q] F240l Signal Issue

I have purchase F240l from online store but i have serious signal reception issues with this mobile.
1- In outdoor Network reception is around 5-10 dbm less than other mobiles. But the real problem comes when i am in low signal areas. This phone will disconnect all of sudden after -95dbm. while other mobiles are still locked to network.
2- The wifi reception is poor as compared to other phones.
3- The GPS never locks. in GPS test it shows 28 satellites in view as soon as GPS test is started but actually all signals remain at zero and in view satellites also remain to zero.
I want to know if this problem is related to hardware or software.
Also if you guys can suggest some solution to this problem from your experience it will be very helpful.
Note: I have reflashed stock jellybean and kitkat roms by lg flash tool but there is no change in situation.

Replace the build.prop
muhammad.ali123 said:
I have purchase F240l from online store but i have serious signal reception issues with this mobile.
1- In outdoor Network reception is around 5-10 dbm less than other mobiles. But the real problem comes when i am in low signal areas. This phone will disconnect all of sudden after -95dbm. while other mobiles are still locked to network.
2- The wifi reception is poor as compared to other phones.
3- The GPS never locks. in GPS test it shows 28 satellites in view as soon as GPS test is started but actually all signals remain at zero and in view satellites also remain to zero.
I want to know if this problem is related to hardware or software.
Also if you guys can suggest some solution to this problem from your experience it will be very helpful.
Note: I have reflashed stock jellybean and kitkat roms by lg flash tool but there is no change in situation.
Click to expand...
Click to collapse
You should try this Method.
This might solve your problem. You should backup your original build.prop in case things goes wrong, also make a Nandroid backup.
Btw it didn't work for me actually 'cause I had other radio issues with my phone.
All the credit goes to Akhtar Ali Jatt... Thanks him if it works.

I was already on custom build.prop to get rid of the Korean rom problems.
Yesterday i also installed Sphinx 3.0 which is supposed to have better signal strength.
But all of this did not work.
I want to know if other f240l users have same problem because it is not optimized for international use.
Or this problem is specific for my phone.
For hardware issue, i improved the antenna connections with pcb but still no change.

muhammad.ali123 said:
I was already on custom build.prop to get rid of the Korean rom problems.
Yesterday i also installed Sphinx 3.0 which is supposed to have better signal strength.
But all of this did not work.
I want to know if other f240l users have same problem because it is not optimized for international use.
Or this problem is specific for my phone.
For hardware issue, i improved the antenna connections with pcb but still no change.
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Hey bro,if you can solve the problem please let me know.Thanks.

muhammad.ali123 said:
I have purchase F240l from online store but i have serious signal reception issues with this mobile.
2- The wifi reception is poor as compared to other phones.
Note: I have reflashed stock jellybean and kitkat roms by lg flash tool but there is no change in situation.
Click to expand...
Click to collapse
did you or anybody solve this problem? i also have issue with my wifi. it works only when atleast there are 3 bars. on two bars it shows random disconnection and also speed is very poor on two bars. and it never detect one bar unlike other mobiles... also reception is poor then other mobiles.. please help me. i will even consider donating if somebody solve my issue..
p.s. i have f240k on stock kitkat

sna762 said:
did you or anybody solve this problem? i also have issue with my wifi. it works only when atleast there are 3 bars. on two bars it shows random disconnection and also speed is very poor on two bars. and it never detect one bar unlike other mobiles... also reception is poor then other mobiles.. please help me. i will even consider donating if somebody solve my issue..
p.s. i have f240k on stock kitkat
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Many users have the same problem so there's nothing you can do to get better wifi signal.
Ps: my F240L is also has very weak wifi signal.

Any news about this issue? I have F240L with weak WIFI and GSM signal.

up

lg g3 d855 mm no network signal

Can someone help me fix my lg g3 signal problem. Experiencing no signal, since unable to connect to network operator but i have signal bars. Sometimes can connect manually to network when signal is strong but always automatically no signal. Is it hardware issue or software issue? I already tried other roms and downgraded to kitkat but still no to avail. Please help. Thanks.

Try to use Fulmics Rom 5.3, I have it without any problem on signal

jemack5 said:
Can someone help me fix my lg g3 signal problem. Experiencing no signal, since unable to connect to network operator but i have signal bars. Sometimes can connect manually to network when signal is strong but always automatically no signal. Is it hardware issue or software issue? I already tried other roms and downgraded to kitkat but still no to avail. Please help. Thanks.
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Bro, could you fix this problem? Cause im having exactly the same problem right now and i dont now how to fixit, please contact me as soon as you can please and forgive my bad english, i speak spanish, thank you

mtov93 said:
Bro, could you fix this problem? Cause im having exactly the same problem right now and i dont now how to fixit, please contact me as soon as you can please and forgive my bad english, i speak spanish, thank you
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Guys, unfortunately i have this same problem. My only option was just use the 3G signal (selecting on network settings). Its been passed 5 months and i still dont know how to fixed. I tried every ******* thing and the problem remains, at least choosing the 3g signal i can use my phone as a phone !!
obs: the problem started after updating to original MM.

I also have this issue, or similar.
Mine occurs when i connect to wifi whilst using 4g. If the 4g signal drops it wont automatically switch down to 3g. I have to do it manually , by changing to 2g/3g in network settings. auto/2g/3g/4g works fine whilst not connected to wifi though.
Mine seemed to start doing this when i first flashed MM or Fulmics.
I have tried flashing old radios, doing a complete unroot factory stock kds flash but nothing has fixed the issue.
Anyone any pointers or an explanation as to what could have possibly happened?
Cheers all

I had the same problem.
I flashed RPM and correct modem.
No signal drop anymore but no LTE.
Flashed modem again and RRom and it works perfect now!
I guess I should flashed the modem twice at the beginning.

Signal problem on custom roms.

my z2s signal keeps fluctuating continuously from -70dbm to -110 dbm in custom roms on HSPA network. in stock rom there is no such problem. is it the same for everyone and is there a solution?

Ya, its a problem in all custom roms which are besed on lineage os or aosp etc. Infact not only in our Z2 plus, but on other smartphones too. Tried on many smartphones. I was using miui 8 on my previous smartphone and it was great. Unfortunately there is no solution for signal problem. Funny thing is that no one talk about it. You are the first who is complaining about signal problem. I am observing this issue since 2014 and there is not a singal thread on this topic.

Ditto.
I have been having this problem with most if not all custom ROMs. I have tried different basebands without any success.
However, most of the time signal is still available even if the meter shows otherwise.

asrone96 said:
my z2s signal keeps fluctuating continuously from -70dbm to -110 dbm in custom roms on HSPA network. in stock rom there is no such problem. is it the same for everyone and is there a solution?
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Click to collapse
Yes the problem is same for all of us.Even after updating the baseband to 1.76 their is signal fluctuation which is disappointing.

Experiencing the same problem with LineageOS 15.1.
On 3G signal is jumping around, but connection isn't lost.
On 2G signal is stable, no fluctutations.
On 4G I can't tell, because my Z2 is lacking band 20, on which I mostly would have 4G with my provider here.
Baseband is 1.70

anyone found solution? yesterday i flashed custom rom for the first time n experiencing fluctuations, using Vodafone 4G IN

Try arrow 3.18 Oreo or pie or bootleggers no such issue is present .. also aex 5.8 Oreo or pie.. tried all 4 no such issues

Best signal on zuk only in zui, in custom signal quality is bad. ;-;

Hey bro this is the solution you need to flash a custom baseband zip coz the one you might be having is outdatedBTW be careful on what zip you are flashing coz it might lock your bootloader and remove all lock screens

Please share
Bravin Joshua said:
Hey bro this is the solution you need to flash a custom baseband zip coz the one you might be having is outdatedBTW be careful on what zip you are flashing coz it might lock your bootloader and remove all lock screens
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Do you have the zip...?
Please share..
I'm using stock rom now because 4g signal is rock stable even indoors and no 4g/3g/2g switching issues...

nikhilZ2 said:
Do you have the zip...?
Please share..
I'm using stock rom now because 4g signal is rock stable even indoors and no 4g/3g/2g switching issues...
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Nop Im not sure

Depends on area
Bravin Joshua said:
Nop Im not sure
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It depends on nw coverage in your area.
Its my personal experience.
And share your experience please...

Its the custom ROM and coverage which fluctuating AF

Mobile data issue after pie update

Hey,
after updating to android pie I have problems with mobile data. In my area I usually have 4G or 3G but I now only have 2G a lot of times. I even compared the coverage with a friend who has the same provider as me but an iPhone, and she had 4G while I only had 2G. It also seems like I can't receive or send any WhatsApp messages unless I am connected to the WiFi.
Does anyone else have these kinds of problems, especially those living in Europe (I live in Germany)? Is there maybe a problem with LTE band 20? (my phone is not rooted, so I am unable to check)
I have the global version btw, and everything worked fine under oreo

dieterbohlen187 said:
Hey,
after updating to android pie I have problems with mobile data. In my area I usually have 4G or 3G but I now only have 2G a lot of times. I even compared the coverage with a friend who has the same provider as me but an iPhone, and she had 4G while I only had 2G. It also seems like I can't receive or send any WhatsApp messages unless I am connected to the WiFi.
Does anyone else have these kinds of problems, especially those living in Europe (I live in Germany)? Is there maybe a problem with LTE band 20? (my phone is not rooted, so I am unable to check)
I have the global version btw, and everything worked fine under oreo
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I am also facing this issue, my internet keeps turning on and off even when i have full network, running on pie

Jadz.31 said:
I am also facing this issue, my internet keeps turning on and off even when i have full network, running on pie
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You can try to reset the APN settings on your phone, that did the job for me!

dieterbohlen187 said:
You can try to reset the APN settings on your phone, that did the job for me!
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Ok i did, time will speak, thanks for the suggestion

dieterbohlen187 said:
You can try to reset the APN settings on your phone, that did the job for me!
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Where do I find them please?

Amphibius2 said:
Where do I find them please?
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Settings=>Network&Internet=>Mobile Network=>Advanced=>Access Point Names=>Reset to default